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LM3405A

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具有内部补偿功能的 1.6MHz、1A 恒流降压型 LED 驱动器

产品详情

Input voltage type DC/DC Topology Buck Vin (min) (V) 3 Vin (max) (V) 22 Vout (max) (V) 20 Vout (min) (V) 0.2 Iout (max) (A) 1 Iq (typ) (mA) 1.8 Features Enable/Shutdown, Integrated Switch, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method PWM Number of channels 1 Rating Catalog
Input voltage type DC/DC Topology Buck Vin (min) (V) 3 Vin (max) (V) 22 Vout (max) (V) 20 Vout (min) (V) 0.2 Iout (max) (A) 1 Iq (typ) (mA) 1.8 Features Enable/Shutdown, Integrated Switch, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method PWM Number of channels 1 Rating Catalog
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • VIN Operating Range of 3 V to 22 V
  • Drives up to 5 High-Brightness LEDs in Series at 1 A
  • Thin SOT-6 and MSOP-PowerPAD™-8 Packages
  • 1.6-MHz Switching Frequency
  • EN/DIM Input for Enabling and PWM Dimming of LEDs
  • 300-mΩ NMOS Switch
  • 40-nA Shutdown Current at VIN = 5 V
  • Internally Compensated Current-mode Control
  • Cycle-by-Cycle Current Limit
  • Input Voltage UVLO
  • Overcurrent Protection
  • Thermal Shutdown
  • VIN Operating Range of 3 V to 22 V
  • Drives up to 5 High-Brightness LEDs in Series at 1 A
  • Thin SOT-6 and MSOP-PowerPAD™-8 Packages
  • 1.6-MHz Switching Frequency
  • EN/DIM Input for Enabling and PWM Dimming of LEDs
  • 300-mΩ NMOS Switch
  • 40-nA Shutdown Current at VIN = 5 V
  • Internally Compensated Current-mode Control
  • Cycle-by-Cycle Current Limit
  • Input Voltage UVLO
  • Overcurrent Protection
  • Thermal Shutdown

The LM3405A is a 1-A constant current buck LED driver designed to provide a simple, high efficiency solution for driving high power LEDs. With a 0.205-V reference voltage feedback control to minimize power dissipation, an external resistor sets the current as needed for driving various types of LEDs. Switching frequency is internally set to 1.6 MHz, allowing small surface mount inductors and capacitors to be used. The LM3405A uses current-mode control and internal compensation offering ease of use and predictable, high performance regulation over a wide range of operating conditions. With a maximum input voltage of 22 V, the device can drive up to 5 High-Brightness LEDs in series at 1-A forward current, with the single LED forward voltage of approximately 3.7 V. Additional features include user accessible EN/DIM pin for enabling and PWM dimming of LEDs, thermal shutdown, cycle-by-cycle current limit and overcurrent protection.

The LM3405A is a 1-A constant current buck LED driver designed to provide a simple, high efficiency solution for driving high power LEDs. With a 0.205-V reference voltage feedback control to minimize power dissipation, an external resistor sets the current as needed for driving various types of LEDs. Switching frequency is internally set to 1.6 MHz, allowing small surface mount inductors and capacitors to be used. The LM3405A uses current-mode control and internal compensation offering ease of use and predictable, high performance regulation over a wide range of operating conditions. With a maximum input voltage of 22 V, the device can drive up to 5 High-Brightness LEDs in series at 1-A forward current, with the single LED forward voltage of approximately 3.7 V. Additional features include user accessible EN/DIM pin for enabling and PWM dimming of LEDs, thermal shutdown, cycle-by-cycle current limit and overcurrent protection.

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TPS92513 正在供货 42V 1.5A 模拟电流可调节降压型 LED 驱动器 This product provides both analog dimming and PWM dimming capabilities and it supports up to 1.5 A output current. Input voltage up to 42 V.

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类型 标题 下载最新的英语版本 日期
* 数据表 LM3405A 1.6-MHz, 1-A Constant Current Buck LED Driver With Internal Compensation in Tiny SOT and MSOP-PowerPAD™ Packages 数据表 (Rev. D) PDF | HTML 2016年 9月 19日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 下载英文版本 2020年 9月 21日
应用手册 AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013年 5月 3日
用户指南 AN-1685 LM3405A Demo Board (Rev. B) 2013年 5月 1日
EVM 用户指南 AN-1899 LM3405A eMSOP Evaluation Board (Rev. B) 2013年 5月 1日
应用手册 Powering & Dimming High-Brightness LEDs w/ LM3405 Constant-Current Buck Reg (Rev. A) 2013年 5月 1日
应用手册 AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) 2013年 4月 23日
用户指南 LM3405A Reference Design for MR16 LED Bulb, 600mA User Guide 2012年 1月 27日
应用手册 Application Note 1899 LM3405A eMSOP Evaluation Board (cn) 2009年 7月 6日
应用手册 Application Note 1685 LM3405A Demo Board (cn) 2007年 10月 19日
应用手册 Application Note 1656 Design Challenges of Switching LED Drivers (cn) 下载最新的英文版本 (Rev.A) 2007年 10月 18日

设计和开发

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评估板

LM3405AEVAL — 具有内部补偿的 1.6MHz、1A 恒流降压 LED 驱动器评估模块 (采用小型 SOT-23 封装)

The LM3405A demo board is configured to drive a series string of high power, high brightness LEDs at a forward current of 1A using the LM3405A constant current buck regulator. The board can accept a full input operating range of 3V to 22V. The converter output voltage adjusts as needed to maintain (...)

用户指南: PDF
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评估板

LM3405AXMYEVAL — LM3405AXMY - 具有 eMSOP 封装的 1.6 MHz、1A 恒流降压 LED 驱动器 EVM

LM3405A is a 1A constant current buck LED driver designed to provide a simple high efficiency solution for driving high power LEDs. With a 0.205V reference voltage feedback control to minimize power dissipation, an external resistor sets the current as needed for driving various types of LEDs. (...)

用户指南: PDF
TI.com 上无现货
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封装 引脚数 下载
HVSSOP (DGN) 8 了解详情
SOT-23-THN (DDC) 6 了解详情

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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